JPS59216501A - Reversible drive apparatus of rotary shaft in center drive type plowing part of walking type agricultural vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a second drive device for forwarding and reversing the rotary shaft in the center drive type tilling section of a walk-behind agricultural vehicle, which drives the rotary shaft in combination with a bevel gear transmission. The purpose of the present invention is to propose a rotary shaft drive device that can extremely easily change the direction of rotation from normal rotation to reverse rotation or from reverse rotation to normal rotation by rotating the rotary shaft 180 degrees in a plane. The gist of the invention is a walk-behind agricultural vehicle configured such that power is transmitted from the PTO shaft protruding toward the light side of the transmission case to the rotary shaft of the tilling section via the transmission case. The upper shaft and the drive shaft are supported by the bevel gear case so that the axis of the drive shaft, which receives the power, is suspended from the upper shaft via a bevel gear transmission, so that the axis of the drive shaft coincides with the left-right center line of the aircraft. The rotary shaft is supported at the bottom of the drive shaft case so that the rotary shaft is driven at right angles to the drive shaft via a bevel gear transmission at the bottom of the shaft. The front engagement plate is supported at the bottom of the bevel gear case so that it can be rotated around the frame, and is fixed at a phase of 180° to the upper surface of the rotary frame through which the small diameter part of the drive shaft case passes. One end of the rotation lever fixed to the drive shaft case is engaged with either the stopper or the rear stopper, and the rotation of the drive shaft case is locked. By operating the drive lever and rotating the drive shaft case 180 degrees, the rotary shaft can be rotated 180 degrees in a plane, making it possible to rotate the rotary shaft in either forward or reverse directions. This is particularly true.

In the following, a detailed description will be given based on illustrative drawings. (15) is a prime mover (16), left and right running wheels (1
7), C7)', tillage section (4), transmission case (1),
It is a walking agricultural vehicle equipped with a handle (18), etc. The power of the prime mover (16) is powered by the engine pulley (19).
The power is transmitted to the input shaft (b) via the LV belt (20), the input turntable IJ- (21), etc. by operating the main clutch lever (8) that controls the power connection/disconnection mechanism (not shown). Input shaft (fixed gear (24) for input shaft.

C2!51 is fixed, and the wheel shaft (
2)) is driven, and the left and right running wheels θ7), ·(17)' mounted on the wheel shaft (A) are driven in the direction of the arrow (A) or arrow (B), and the agricultural vehicle 05) moves forward or backward.

In addition, the rotary shaft (5) of the tilling section (4) is
Sliding gears A) and (C) for transmitting power to ) are slidably wedge-fitted into fixed gears (C) and 00) fixed to the PTO shaft (2). It has a structure that meshes with each other. A large sprocket 01) and a small sprocket) are supported at the front and rear of the transmission case (3), respectively.The large sprocket O1) is wedged low on the PTO shaft (2), and the small sprocket (32) is supported by a small sprocket. The upper shaft (6) is wedge-fitted, and the large sprocket l-01) and the small sprocket 02) are wrapped around the chino 03), and the upper shaft (6)
This is the configuration in which the motor is driven.

A bevel gear A04) is fixed to one end of the upper shaft (6),
The bevel gear A04) meshes with the bevel gear B05) fixed to the north end of the drive shaft (7), and the drive shaft (7)
to drive. The drive shaft (7) is the bevel gear A0 shown above.
4) It is suspended downward via a bevel gear transmission device including a bevel gear BOQ. The upper shaft (6) and drive shaft (7) are connected to the bevel gear case (
8). The transmission case (3) is connected to the transmission case (11) and bevel gear case (8) by bolts (to).
It is attached to.

A small bevel gear 0η is wedge-fitted to the lower end of the drive shaft (7), and a large bevel gear (T) meshed with the small bevel gear 07) is fixed to the low-clutch shaft (5). The rotor shaft (5) is supported at the lower part of the drive shaft case (9) so that the rotor shaft (5) is driven in a right angle position. The upper part of the drive shaft case (9) fits into the lower part of the bevel gear case (8), and is fitted with a stop ring (3g) so that the drive shaft case (9) can rotate around the axis of the drive shaft (7). It is supported by the bevel gear case (8). The drive shaft case (9) is the bevel gear case (
A cylindrical portion 40) is formed in the upper part of the drive shaft case 8) to reinforce the support of the drive shaft case (9).

A suitable lever mount (49) is attached to the drive shaft case (9).
) is fixed thereto, and a rotating lever (1) is fixed so that it can move up and down using the bin θ1) as a fulcrum.

In addition, on the upper surface of the rotary frame (11) through which the small diameter portion θ0) of the drive shaft case (9) passes, a rotating lever 04) fixed to the drive shaft case (9) is fixed. The front locking tool 0 pier and the rear locking tool (+3
) is fixedly installed, and one end of the rotation lever (4) is engaged with the locking tools 02) and (13) to lock the rotation of the drive shaft case (9). . It should be noted that the front locking tools (1 to 03) and the rear locking tools 03 are provided oppositely at positions having a phase of 1°80° with respect to the axis of the drive shaft (7). The front end of the low reframe (11) is a hitch (42)
A strut θ6) having a tail wheel Q5) is attached to the rear end via a mounting bracket -). (4η is a rotary cover.

Various working machines such as tilling claws 08) are attached to the left and right sides of the rotary shaft (5) of the tilling section (4) configured as described above, depending on the purpose. , ridge forming, and other operations are performed.

Next, the operating state of the present invention will be explained. First, in ordinary tillage work, a transmission mechanism (not shown) is operated, and the fixed gear (24) is engaged with the gear of a transmission device (not shown), so that the left and right running wheels (17), (1η') move in the direction of the arrow (A). On the other hand, the sliding gear Qη, (to) is set to rotate by operating the transmission mechanism (not shown) to change the fixed gear (g), 00
) and set the engaged rotary shaft (5) to the desired rotation speed.

As shown in Fig. 4, the rotation direction of the rotary shaft (5) is determined by the arrow C shown in Fig. 1 when the large bevel gear (G) is located to the right of the left-right center line It is set to rotate in the direction of →. That is, when the rotation lever (+4) for rotating the drive shaft case (9) is engaged with the front locking tool θ2) as shown in FIGS. 1 and 6.

In this state, the main clutch lever (2) is operated and normal tilling work is performed using the power of the prime mover (+6) via a power disconnection mechanism (not shown). ``This state is a so-called forward rotation use state in which the rotary shaft (5) rotates in the direction (c) in the same direction as the rotation direction (a) of the traveling wheels (Iη, (+7)'). This rotary shaft (
To switch the forward rotation direction (c) of 5) to the reverse rotation direction, move the rotary lever (14) engaged with the front locking tool (+2) by pressing the pin ( 41) as a fulcrum (indicated by the chain line in Fig. 6) to release the locking state with the front locking tool (12), and then turn the rotating lever (
+4) is rotated 180 degrees and engaged with the rear locking tool (13), the drive shaft case (9) also rotates 180 degrees, and the rotary shaft (5) also rotates 180 degrees in a plane to rotate left and right. are exchanged, and as shown in Figure 6, the large bevel gear 08) is now located to the left of the left-right center line XX of the aircraft,
The rotation direction of the rotary shaft (5) is opposite to that in Fig. 4.
That is, it rotates in the direction of the arrow shown in FIG. Moreover, the direction of the tilling claw (48) and other working implements is also oriented in accordance with the reverse direction (as shown by the chain-lined tilling claw in Figure 1).

There is no need to remove it from the rotary shaft (5) and swap it left and right.

This rotation (in the opposite direction) allows stable tillage work when used for trench digging work as well as tillage work in hard fields, without causing the machine body to jump forward or any kind of dashing phenomenon. It is also extremely useful for burying straw, etc. in the soil.

In this manner, various operations are performed by rotating the drive shaft case (9) 180 degrees to switch the rotary shaft (5) from normal rotation to reverse rotation, and from reverse rotation to normal rotation.

As detailed above, the drive device for the rotary shaft in the center drive type tilling section of the walk-behind agricultural vehicle according to the present invention uses a gear or the like as a conventional device to switch the direction of rotation of the rotary shaft between forward and reverse rotation. There is no need for special installation, and it is possible to switch from normal rotation to reverse rotation, and from reverse rotation to normal rotation, simply by rotating the rotary shaft 180 degrees in plane. The direction is automatically changed according to the 180° plane rotation of the Rokuri axis.
Since the orientation corresponds to each direction of rotation, there is no need to remove the work equipment from the rotary shaft and swap it left and right, and the rotary shaft can also be turned 180° in plane with a single touch operation using the rotary lever. It can be said to be a forward/reverse rotation drive device with a rotary shaft that has extremely excellent handling properties.

[Brief explanation of drawings]

The accompanying drawings are drawings illustrating embodiments of the present invention, in which Fig. 1 is a side view of a walking agricultural vehicle, Fig. 2 is a plan sectional view of the main parts in Fig. 2 is a side sectional view of the main part taken along the line X-X, FIG. 4 is a sectional view of the main part taken along the Y-Y line of FIG. 6, and FIG. The plan view shown in FIG. 6 is a cross-sectional view of the position where the rotary shaft in FIG. 4 is rotated by 180 degrees in plane. In these drawings, (1) is a transmission case, (2) is a PTO shaft, (3) is a transmission case, (4) is a tilling section, (
5) is the rotary shaft, (6) is the -1 part shaft, (7) is the drive shaft, (8) is the bevel gear case, (9) is the drive shaft case N ('o) is the small diameter part, (11) (+2) is the front locking tool, (+3) is the rear locking tool, (14) is the rotating lever, and XX is the left and right center line of the fuselage. Patent attorney representing patent applicant Ike Koshi Mansei 50 1 000 (,7---)3 Serisu diagram

Claims (1)

[Claims] The PTO shaft (2) protrudes to the side of the transmission case (1).
) is configured to transmit power from the transmission case (3) to the rotary shaft (5) of the tilling section (4), in which the power is received from the transmission case (3). The upper shaft (6) and the drive shaft (7) are carefully aligned with the left-right center line 7) is supported by a bevel gear case (8), and the rotary shaft (5) is driven at right angles to the drive shaft (7) via a bevel gear transmission at the bottom of the drive shaft (7). , the rotor shaft (5) is connected to the drive shaft case (9).
), and the drive shaft case (9) is supported at the bottom of the bevel gear case (8) so as to be able to rotate around the axis of the drive shaft (7). ) The front locking tool (12) and the rear locking tool ◇3) are fixedly installed with a phase of 180° to each other on the upper surface of the rotary frame α1) through which the small diameter portion (10) of One end of the rotary lever α4 fixed to the drive shaft case (9) is engaged with one end of the rotary lever α4 to lock the rotation of the drive shaft case (9), and the rotary lever 04) to move the drive shaft case (9) to 1.
By rotating the rotary shaft (5) 800 times, the
A rotary wheel in a center drive type tilling section of a walk-behind agricultural vehicle, characterized in that the rotary wheel shaft (5) can be rotated in a plane by 0° and the direction of rotation of the rotary wheel shaft (5) can be rotated in either forward or reverse directions. Forward/reverse shaft drive device.